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Detail publikace
KOKTAVÝ, P. PAVELKA, J. ŠIKULA, J.
Originální název
Characterization of acoustic and electromagnetic emission sources
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
Originální abstrakt
Cracks creation is accompanied by electric charge redistribution due to loosened chemical bonds. Electric charges on crack walls create dipole moments. Crack wall vibrations produce time dependent dipole moments and, consequently, electric and magnetic fields are generated. An electric signal is induced on metal electrodes. Information about the crack wall vibration was obtained from this signal analysis. For crack lengths below 1 mm the respective electrical signal has a frequency of over 2 MHz. In this paper the frequency analysis was performed in a frequency band of up to 5 MHz.
Klíčová slova
Cracks creation, Electromagnetic emission, electric charge, Acoustic emission
Autoři
KOKTAVÝ, P.; PAVELKA, J.; ŠIKULA, J.
Rok RIV
2004
Vydáno
1. 1. 2004
ISSN
0957-0233
Periodikum
Measurement Science and Technology
Ročník
15
Číslo
1
Stát
Spojené království Velké Británie a Severního Irska
Strany od
973
Strany do
977
Strany počet
5
BibTex
@article{BUT42289, author="Pavel {Koktavý} and Jan {Pavelka} and Josef {Šikula}", title="Characterization of acoustic and electromagnetic emission sources", journal="Measurement Science and Technology", year="2004", volume="15", number="1", pages="973--977", issn="0957-0233" }